Overview

Electrochemical sensor technology offers highly specific gas sensing in the low ppm range for many gases. The EC gas detector gives long-term dependable service while identifying target gases without the inconvenience or hazards of nuisance trips.

Manning Systems new SensorCheck™ is a microprocessor-based technology that monitors and predicts the electrical viability of its electrochemical ammonia sensors by testing every 24 hours. If the sensor dries up or is disconnected, SensorCheck™ sends an indication that can be detected by a Manning Systems Gas Monitor of PLC.

All enclosures have high-quality, durable construction, including robust, well-designed steel sensor and readout enclosures. High quality connectors ensure easy wire insertion. Unlike fragile plastic housings that may break in cold temperatures, Manning Systems enclosures have secured hardware and hinged doors to speed sensor installation in both cold and wet environments.

All sensors can accept the optional ATMOS equipped^® technology that allows Manning Systems electrochemical gas sensors to automatically adapt to their environment, providing accurate and reliable performance under the harshest conditions even down to -50ºF and condensing atmospheres.

EC-F9-NH₃ Electrochemical Ammonia Sensor

Manning Systems EC-F9-NH₃ has set the ammonia sensor standard for reliability, durability and long-term economical gas detection sensor performance.

EC-F9-NH₃ with SensorCheck™ provides a simple and reliable system for detecting ammonia leakage in almost any environment. This sensor is "gas specific" and will not trip in the presence of other gases. The sensor responds rapidly to ammonia gas concentrations in the low ppm range and will generally operate 2-4 years (depending on environment) between sensor replacement. The inexpensive cells are simple to replace and ideal for food processing areas, loading docks, fruit and vegetable storage and other chemically active environments. It has a linear 4/20 mA output and ranges include 0-100 ppm, -250, -500, and -1,000 ppm ammonia.

The EC-F9-NH₃ offers an LCD display option that will indicate ppm gas concentration during normal operation and show sensor operation status for changes in operating mode, calibration procedures and troubleshooting. Two external pushbuttons ("Accept" and "Scroll") are used to navigate test functions and operating modes. An internal pushbutton and group of LED's are also installed on the PCB to be used in the absence of the LCD module.

NOTE: The IR-NH₃ infrared sensor is used for high level (up to 2%) ammonia sensing, is specific to ammonia and often used for compressor room shutdown applications.

EC Single Gas Electrochemical Sensor

The EC series is a family of highly selective gas sensors that detect a variety of gases including carbon monoxide, chlorine, chlorine dioxide, hydrogen sulfide, sulfur dioxide, ozone, etc. Electrochemical gas sensors send a linear 4/20 mA output to Manning Systems readouts or PLC's and computer control systems, and can be housed to withstand harsh food processing or chemical environments.

EC-O₂ Electrochemical Extended Life Oxygen Sensor

Manning's EC-O₂ for oxygen exhibits exceptionally long life (10 years at typical oxygen concentration of 20.9%), plus excellent chemical durability. The transmitter / pre-amp provides a linear 4/20 mA output in two ranges: 0-25% and 15-25% and can be used for either upscale or downscale alarm.

Monitor one to 96 sensors from a single controller

Manning Systems can supply a single point gas sensor system, four channel system, or multi-channel unit that monitors as many as ten sensors at a single master safety control panel. The new AirAlert™ 96d multi-channel gas monitoring system adds addressable RS-485 Modbus communication protocol to the broad line of Manning Systems readout/alarm units. A total of 96 gas sensors and relay modules can be linked to a single controller.

All readouts have relay outputs to notify security personnel, activate fans, shut off valves or refrigeration equipment, etc. Sensors give a linear 4/20 mA output and can tie directly to a PLC or building control system.